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ir_to_mesa: Set up storage for uniform vars.

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This commit is contained in:
Eric Anholt 2010-06-03 09:39:54 -07:00
parent 554dbcce77
commit a9b619bb3b
1 changed files with 44 additions and 17 deletions
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61
ir_to_mesa.cpp
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@ -88,6 +88,9 @@ public:
int next_temp;
int next_constant;
int next_uniform;
temp_entry *find_variable_storage(ir_variable *var);
ir_to_mesa_src_reg get_temp(int size);
@ -334,13 +337,16 @@ type_size(const struct glsl_type *type)
case GLSL_TYPE_INT:
case GLSL_TYPE_FLOAT:
case GLSL_TYPE_BOOL:
assert(!type->is_matrix());
/* Regardless of size of vector, it gets a vec4. This is bad
* packing for things like floats, but otherwise arrays become a
* mess. Hopefully a later pass over the code can pack scalars
* down if appropriate.
*/
return 1;
if (type->is_matrix()) {
return 4; /* FINISHME: Not all matrices are 4x4. */
} else {
/* Regardless of size of vector, it gets a vec4. This is bad
* packing for things like floats, but otherwise arrays become a
* mess. Hopefully a later pass over the code can pack scalars
* down if appropriate.
*/
return 1;
}
case GLSL_TYPE_ARRAY:
return type_size(type->fields.array) * type->length;
case GLSL_TYPE_STRUCT:
@ -354,29 +360,40 @@ type_size(const struct glsl_type *type)
}
}
ir_to_mesa_src_reg
ir_to_mesa_visitor::get_temp_for_var(ir_variable *var)
temp_entry *
ir_to_mesa_visitor::find_variable_storage(ir_variable *var)
{
ir_to_mesa_src_reg src_reg;
temp_entry *entry;
foreach_iter(exec_list_iterator, iter, this->variable_storage) {
entry = (temp_entry *)iter.get();
if (entry->var == var)
goto done;
return entry;
}
entry = new temp_entry(var, PROGRAM_TEMPORARY, this->next_temp);
this->variable_storage.push_tail(entry);
return NULL;
}
next_temp += type_size(var->type);
ir_to_mesa_src_reg
ir_to_mesa_visitor::get_temp_for_var(ir_variable *var)
{
temp_entry *entry;
ir_to_mesa_src_reg src_reg;
entry = find_variable_storage(var);
if (!entry) {
entry = new temp_entry(var, PROGRAM_TEMPORARY, this->next_temp);
this->variable_storage.push_tail(entry);
next_temp += type_size(var->type);
}
done:
src_reg.file = entry->file;
src_reg.index = entry->index;
src_reg.swizzle = swizzle_for_size(var->type->vector_elements);
src_reg.reladdr = false;
return src_reg;
}
@ -384,7 +401,16 @@ done:
void
ir_to_mesa_visitor::visit(ir_variable *ir)
{
(void)ir;
if (ir->mode == ir_var_uniform) {
temp_entry *entry = find_variable_storage(ir);
if (!entry) {
entry = new temp_entry(ir, PROGRAM_UNIFORM, this->next_uniform);
this->variable_storage.push_tail(entry);
this->next_uniform += type_size(ir->type);
}
}
}
void
@ -997,6 +1023,7 @@ ir_to_mesa_visitor::ir_to_mesa_visitor()
result.file = PROGRAM_UNDEFINED;
next_temp = 1;
next_constant = 0;
next_uniform = 0;
}
static struct prog_src_register